diff options
Diffstat (limited to 'board/shannon')
| -rw-r--r-- | board/shannon/config.mk | 23 | ||||
| -rw-r--r-- | board/shannon/memsetup.S | 94 |
2 files changed, 117 insertions, 0 deletions
diff --git a/board/shannon/config.mk b/board/shannon/config.mk new file mode 100644 index 0000000..736d3af --- /dev/null +++ b/board/shannon/config.mk @@ -0,0 +1,23 @@ +# +# LART board with SA1100 cpu +# +# see http://www.lart.tudelft.nl/ for more information on LART +# + +# +# Tuxscreen has 4 banks of 4 MB DRAM each +# +# c000'0000 +# c800'0000 +# d000'0000 +# d800'0000 +# +# Linux-Kernel is expected to be at c000'8000, entry c000'8000 +# +# we load ourself to d830'0000, the upper 1 MB of the last (4th) bank +# +# download areas is c800'0000 +# + + +TEXT_BASE = 0xd8300000 diff --git a/board/shannon/memsetup.S b/board/shannon/memsetup.S new file mode 100644 index 0000000..4f0c464 --- /dev/null +++ b/board/shannon/memsetup.S @@ -0,0 +1,94 @@ +/* + * Memory Setup stuff - taken from blob memsetup.S + * + * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and + * Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl) + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + + + +#include <config.h> +#include <version.h> + + +/* some parameters for the board */ + +MEM_BASE: .long 0xa0000000 +MEM_START: .long 0xc0000000 + +#define MDCNFG 0x00 +#define MDCAS0 0x04 +#define MDCAS1 0x08 +#define MDCAS2 0x0c +#define MSC0 0x10 +#define MSC1 0x14 +#define MECR 0x18 + +mdcas0: .long 0xc71c703f @ cccccccf +mdcas1: .long 0xffc71c71 @ fffffffc +mdcas2: .long 0xffffffff @ ffffffff +mdcnfg: .long 0x0334b21f @ 9326991f +msc0: .long 0xfff84458 @ 42304230 +msc1: .long 0xffffffff @ 20182018 +mecr: .long 0x7fff7fff @ 01000000 + +/* setting up the memory */ + +.globl memsetup +memsetup: + ldr r0, MEM_BASE + + /* Setup the flash memory */ + ldr r1, msc0 + str r1, [r0, #MSC0] + + /* Set up the DRAM */ + + /* MDCAS0 */ + ldr r1, mdcas0 + str r1, [r0, #MDCAS0] + + /* MDCAS1 */ + ldr r1, mdcas1 + str r1, [r0, #MDCAS1] + + /* MDCAS2 */ + ldr r1, mdcas2 + str r1, [r0, #MDCAS2] + + /* MDCNFG */ + ldr r1, mdcnfg + str r1, [r0, #MDCNFG] + + /* Set up PCMCIA space */ + ldr r1, mecr + str r1, [r0, #MECR] + + /* Load something to activate bank */ + ldr r1, MEM_START + +.rept 8 + ldr r0, [r1] +.endr + + /* everything is fine now */ + mov pc, lr + |